Malicious PDF — malware analysis report

Static analysis result for SHA-256 59268fdfe1443141…

MALICIOUS

PDF

41.7 KB Created: 2020-08-13 23:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 997ccf29a9425dd6d823d996a36a7ff4 SHA-1: 794363b2cc1737464353cf056f0f5431527dc7ac SHA-256: 59268fdfe14431417e74d9585e72b722bb484e61bfd9f7bbeab0e066eef35eea
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a PDF link to a known malicious redirector infrastructure at ttraff.ru, which is also present in the document body. This indicates a social engineering attempt to trick users into visiting a malicious site by disguising it as a download for 'space flight simulator mod apk full version'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=space+flight+simulator+mod+apk+full+version
    • http://ropake.jelmhorst.com/uploads/1/3/1/4/131407406/sapoxav-rejijo-xutezo-worinoga.pdf
    • http://files.freedomhoops.org/uploads/1/3/1/4/131453536/9919727.pdf
    • http://files.winniwoodsfarm.com/uploads/1/3/1/1/131164520/c2b144c5166f.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/fusisanobenutune.pdf
    • https://cdn.shopify.com/s/files/1/0437/2211/3173/files/practical_approach_to_electroencephalography_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/5477/4949/files/81618392555.pdf
    • https://cdn.shopify.com/s/files/1/0437/3171/4199/files/wordly_wise_book_8_lesson_4_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/0659/1127/files/encyclopedia_of_world_history_volume_2_the_expanding_world.pdf
    • https://cdn.shopify.com/s/files/1/0448/2488/7456/files/la_caida_de_tenochtitlan.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/73758738780.pdf
    • https://cdn.shopify.com/s/files/1/0432/8377/5643/files/gabifevokube.pdf
    • https://cdn.shopify.com/s/files/1/0437/6182/8001/files/50549213376.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/xasunupuromubodibezividem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/gusuvanexugotoguto.pdf
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/catalogue_of_chart.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063c9.bin
fe7b565c9dec8f2dd67f427afa41f304517df72bb30b018984c73df66a7e89a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x63C9 5796 bytes
font_01_sfnt_off0000775d.bin
c62df743c7f288902d1302baf328ddcdac991d5173377622f55ac209d854cede
pdf-font-stream PDF embedded font (sfnt) at offset 0x775D 9980 bytes